#pragma once

#include "Poller.h"
#include "Timestampp.h"

#include <vector>
#include <sys/epoll.h>

class EPollPoller : public Poller
{
public:
    EPollPoller(EventLoop* loop);
    ~EPollPoller() override;

    //重写基类的抽象方法
    Timestampp poll(int timeoutMs, ChannelList *activeChannels) override;
    void updateChannel(Channel *channel) override;
    void removeChannel(Channel *channel) override;

private:
    static const int kInitEventListSize = 16;
    
    //填写活跃的连接
    void fillActiveChannels(int numEvents, ChannelList *activeChannels) const;
    //更新channel通道 
    void update(int operation, Channel* channel);

    using EventList = std::vector<epoll_event>;

    int epollfd_;
    EventList events_;
};